21315000

素因数分解:

$2^3\times 3^1\times 5^4\times 7^2\times {\mathrm{29}}^1$

素因数の和:72

約数の個数: 240

約数和(自身を含む): 80130600

約数和(自身を除く): 58815600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 29, 30, 35, 40, 42, 49, 50, 56, 58, 60, 70, 75, 84, 87, 98, 100, 105, 116, 120, 125, 140, 145, 147, 150, 168, 174, 175, 196, 200, 203, 210, 232, 245, 250, 280, 290, 294, 300, 348, 350, 375, 392, 406, 420, 435, 490, 500, 525, 580, 588, 600, 609, 625, 696, 700, 725, 735, 750, 812, 840, 870, 875, 980, 1000, 1015, 1050, 1160, 1176, 1218, 1225, 1250, 1400, 1421, 1450, 1470, 1500, 1624, 1740, 1750, 1875, 1960, 2030, 2100, 2175, 2436, 2450, 2500, 2625, 2842, 2900, 2940, 3000, 3045, 3480, 3500, 3625, 3675, 3750, 4060, 4200, 4263, 4350, 4375, 4872, 4900, 5000, 5075, 5250, 5684, 5800, 5880, 6090, 6125, 7000, 7105, 7250, 7350, 7500, 8120, 8526, 8700, 8750, 9800, 10150, 10500, 10875, 11368, 12180, 12250, 13125, 14210, 14500, 14700, 15000, 15225, 17052, 17400, 17500, 18125, 18375, 20300, 21000, 21315, 21750, 24360, 24500, 25375, 26250, 28420, 29000, 29400, 30450, 30625, 34104, 35000, 35525, 36250, 36750, 40600, 42630, 43500, 49000, 50750, 52500, 54375, 56840, 60900, 61250, 71050, 72500, 73500, 76125, 85260, 87000, 91875, 101500, 105000, 106575, 108750, 121800, 122500, 126875, 142100, 145000, 147000, 152250, 170520, 177625, 183750, 203000, 213150, 217500, 245000, 253750, 284200, 304500, 355250, 367500, 380625, 426300, 435000, 507500, 532875, 609000, 710500, 735000, 761250, 852600, 888125, 1015000, 1065750, 1421000, 1522500, 1776250, 2131500, 2664375, 3045000, 3552500, 4263000, 5328750, 7105000, 10657500, 21315000]

約数ペア:

[(1, 21315000), (2, 10657500), (3, 7105000), (4, 5328750), (5, 4263000), (6, 3552500), (7, 3045000), (8, 2664375), (10, 2131500), (12, 1776250), (14, 1522500), (15, 1421000), (20, 1065750), (21, 1015000), (24, 888125), (25, 852600), (28, 761250), (29, 735000), (30, 710500), (35, 609000), (40, 532875), (42, 507500), (49, 435000), (50, 426300), (56, 380625), (58, 367500), (60, 355250), (70, 304500), (75, 284200), (84, 253750), (87, 245000), (98, 217500), (100, 213150), (105, 203000), (116, 183750), (120, 177625), (125, 170520), (140, 152250), (145, 147000), (147, 145000), (150, 142100), (168, 126875), (174, 122500), (175, 121800), (196, 108750), (200, 106575), (203, 105000), (210, 101500), (232, 91875), (245, 87000), (250, 85260), (280, 76125), (290, 73500), (294, 72500), (300, 71050), (348, 61250), (350, 60900), (375, 56840), (392, 54375), (406, 52500), (420, 50750), (435, 49000), (490, 43500), (500, 42630), (525, 40600), (580, 36750), (588, 36250), (600, 35525), (609, 35000), (625, 34104), (696, 30625), (700, 30450), (725, 29400), (735, 29000), (750, 28420), (812, 26250), (840, 25375), (870, 24500), (875, 24360), (980, 21750), (1000, 21315), (1015, 21000), (1050, 20300), (1160, 18375), (1176, 18125), (1218, 17500), (1225, 17400), (1250, 17052), (1400, 15225), (1421, 15000), (1450, 14700), (1470, 14500), (1500, 14210), (1624, 13125), (1740, 12250), (1750, 12180), (1875, 11368), (1960, 10875), (2030, 10500), (2100, 10150), (2175, 9800), (2436, 8750), (2450, 8700), (2500, 8526), (2625, 8120), (2842, 7500), (2900, 7350), (2940, 7250), (3000, 7105), (3045, 7000), (3480, 6125), (3500, 6090), (3625, 5880), (3675, 5800), (3750, 5684), (4060, 5250), (4200, 5075), (4263, 5000), (4350, 4900), (4375, 4872)]